Update for new serial functionality.
Update for new serial functionality.

lpetrov-pivotal/gpdb,edespino/gpdb,CraigHarris/gpdb,greenplum-db/gpdb,tangp3/gpdb,zaksoup/gpdb,yuanzhao/gpdb,CraigHarris/gpdb,adam8157/gpdb,CraigHarris/gpdb,greenplum-db/gpdb,Chibin/gpdb,yazun/postgres-xl,atris/gpdb,edespino/gpdb,xinzweb/gpdb,postmind-net/postgres-xl,kaknikhil/gpdb,lpetrov-pivotal/gpdb,xinzweb/gpdb,zeroae/postgres-xl,tangp3/gpdb,lintzc/gpdb,yuanzhao/gpdb,ovr/postgres-xl,ahachete/gpdb,lisakowen/gpdb,snaga/postgres-xl,lpetrov-pivotal/gpdb,jmcatamney/gpdb,kaknikhil/gpdb,xuegang/gpdb,pavanvd/postgres-xl,50wu/gpdb,yuanzhao/gpdb,foyzur/gpdb,atris/gpdb,tangp3/gpdb,adam8157/gpdb,Postgres-XL/Postgres-XL,yuanzhao/gpdb,lisakowen/gpdb,zeroae/postgres-xl,xuegang/gpdb,tangp3/gpdb,janebeckman/gpdb,adam8157/gpdb,Quikling/gpdb,postmind-net/postgres-xl,lintzc/gpdb,royc1/gpdb,randomtask1155/gpdb,greenplum-db/gpdb,ahachete/gpdb,zeroae/postgres-xl,xinzweb/gpdb,ashwinstar/gpdb,chrishajas/gpdb,cjcjameson/gpdb,foyzur/gpdb,Postgres-XL/Postgres-XL,CraigHarris/gpdb,edespino/gpdb,tpostgres-projects/tPostgres,tpostgres-projects/tPostgres,Quikling/gpdb,tpostgres-projects/tPostgres,ashwinstar/gpdb,rvs/gpdb,cjcjameson/gpdb,lintzc/gpdb,ovr/postgres-xl,ashwinstar/gpdb,rubikloud/gpdb,arcivanov/postgres-xl,pavanvd/postgres-xl,ashwinstar/gpdb,ahachete/gpdb,CraigHarris/gpdb,jmcatamney/gpdb,zaksoup/gpdb,jmcatamney/gpdb,CraigHarris/gpdb,kmjungersen/PostgresXL,oberstet/postgres-xl,kaknikhil/gpdb,cjcjameson/gpdb,foyzur/gpdb,jmcatamney/gpdb,0x0FFF/gpdb,edespino/gpdb,tangp3/gpdb,rvs/gpdb,50wu/gpdb,atris/gpdb,0x0FFF/gpdb,tangp3/gpdb,randomtask1155/gpdb,techdragon/Postgres-XL,greenplum-db/gpdb,yuanzhao/gpdb,edespino/gpdb,royc1/gpdb,greenplum-db/gpdb,janebeckman/gpdb,rvs/gpdb,atris/gpdb,foyzur/gpdb,jmcatamney/gpdb,0x0FFF/gpdb,kmjungersen/PostgresXL,50wu/gpdb,lisakowen/gpdb,0x0FFF/gpdb,snaga/postgres-xl,zaksoup/gpdb,chrishajas/gpdb,lisakowen/gpdb,atris/gpdb,edespino/gpdb,cjcjameson/gpdb,zaksoup/gpdb,tpostgres-projects/tPostgres,xinzweb/gpdb,foyzur/gpdb,Quikling/gpdb,Chibin/gpdb,xinzweb/gpdb,rubikloud/gpdb,xuegang/gpdb,tangp3/gpdb,0x0FFF/gpdb,zeroae/postgres-xl,Quikling/gpdb,arcivanov/postgres-xl,techdragon/Postgres-XL,pavanvd/postgres-xl,cjcjameson/gpdb,lintzc/gpdb,kaknikhil/gpdb,foyzur/gpdb,yuanzhao/gpdb,0x0FFF/gpdb,pavanvd/postgres-xl,adam8157/gpdb,ahachete/gpdb,lpetrov-pivotal/gpdb,zaksoup/gpdb,jmcatamney/gpdb,0x0FFF/gpdb,zaksoup/gpdb,kmjungersen/PostgresXL,lisakowen/gpdb,lintzc/gpdb,chrishajas/gpdb,ovr/postgres-xl,randomtask1155/gpdb,Postgres-XL/Postgres-XL,xuegang/gpdb,rubikloud/gpdb,arcivanov/postgres-xl,rubikloud/gpdb,arcivanov/postgres-xl,janebeckman/gpdb,yazun/postgres-xl,Chibin/gpdb,ashwinstar/gpdb,postmind-net/postgres-xl,zeroae/postgres-xl,cjcjameson/gpdb,ahachete/gpdb,greenplum-db/gpdb,0x0FFF/gpdb,lintzc/gpdb,Quikling/gpdb,lisakowen/gpdb,CraigHarris/gpdb,royc1/gpdb,Quikling/gpdb,rvs/gpdb,lintzc/gpdb,janebeckman/gpdb,Chibin/gpdb,Chibin/gpdb,xuegang/gpdb,CraigHarris/gpdb,royc1/gpdb,ashwinstar/gpdb,snaga/postgres-xl,zaksoup/gpdb,chrishajas/gpdb,lintzc/gpdb,Chibin/gpdb,rvs/gpdb,Quikling/gpdb,postmind-net/postgres-xl,kmjungersen/PostgresXL,rubikloud/gpdb,xuegang/gpdb,chrishajas/gpdb,Postgres-XL/Postgres-XL,janebeckman/gpdb,ovr/postgres-xl,Quikling/gpdb,cjcjameson/gpdb,cjcjameson/gpdb,randomtask1155/gpdb,xuegang/gpdb,xinzweb/gpdb,adam8157/gpdb,lisakowen/gpdb,kaknikhil/gpdb,jmcatamney/gpdb,yuanzhao/gpdb,rubikloud/gpdb,50wu/gpdb,snaga/postgres-xl,adam8157/gpdb,lpetrov-pivotal/gpdb,Chibin/gpdb,50wu/gpdb,yazun/postgres-xl,oberstet/postgres-xl,pavanvd/postgres-xl,randomtask1155/gpdb,50wu/gpdb,arcivanov/postgres-xl,Quikling/gpdb,oberstet/postgres-xl,royc1/gpdb,ovr/postgres-xl,snaga/postgres-xl,atris/gpdb,ahachete/gpdb,rubikloud/gpdb,techdragon/Postgres-XL,xuegang/gpdb,lisakowen/gpdb,kaknikhil/gpdb,techdragon/Postgres-XL,randomtask1155/gpdb,edespino/gpdb,xinzweb/gpdb,ashwinstar/gpdb,adam8157/gpdb,lpetrov-pivotal/gpdb,lpetrov-pivotal/gpdb,janebeckman/gpdb,cjcjameson/gpdb,cjcjameson/gpdb,foyzur/gpdb,postmind-net/postgres-xl,randomtask1155/gpdb,yuanzhao/gpdb,rubikloud/gpdb,atris/gpdb,Quikling/gpdb,chrishajas/gpdb,adam8157/gpdb,oberstet/postgres-xl,xinzweb/gpdb,rvs/gpdb,ahachete/gpdb,kaknikhil/gpdb,tpostgres-projects/tPostgres,kmjungersen/PostgresXL,zaksoup/gpdb,lpetrov-pivotal/gpdb,foyzur/gpdb,yuanzhao/gpdb,janebeckman/gpdb,atris/gpdb,rvs/gpdb,Chibin/gpdb,rvs/gpdb,janebeckman/gpdb,Chibin/gpdb,kaknikhil/gpdb,randomtask1155/gpdb,royc1/gpdb,chrishajas/gpdb,yuanzhao/gpdb,ahachete/gpdb,arcivanov/postgres-xl,greenplum-db/gpdb,CraigHarris/gpdb,greenplum-db/gpdb,50wu/gpdb,techdragon/Postgres-XL,royc1/gpdb,xuegang/gpdb,tangp3/gpdb,Chibin/gpdb,edespino/gpdb,yazun/postgres-xl,kaknikhil/gpdb,rvs/gpdb,oberstet/postgres-xl,rvs/gpdb,yazun/postgres-xl,ashwinstar/gpdb,janebeckman/gpdb,kaknikhil/gpdb,jmcatamney/gpdb,edespino/gpdb,janebeckman/gpdb,Postgres-XL/Postgres-XL,royc1/gpdb,chrishajas/gpdb,50wu/gpdb,lintzc/gpdb,edespino/gpdb